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ARM: Add save_boot_params for ARMv8
Implement a hook to allow boards to save boot-time CPU state for later use. When U-Boot is chain-loaded by another bootloader, CPU registers may contain useful information such as system configuration information. This feature mirrors the equivalent ARMv7 feature. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
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@ -53,6 +53,11 @@ _bss_end_ofs:
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.quad __bss_end - _start
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reset:
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/* Allow the board to save important registers */
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b save_boot_params
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.globl save_boot_params_ret
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save_boot_params_ret:
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#ifdef CONFIG_SYS_RESET_SCTRL
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bl reset_sctrl
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#endif
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@ -282,3 +287,7 @@ ENTRY(c_runtime_cpu_setup)
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ret
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ENDPROC(c_runtime_cpu_setup)
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WEAK(save_boot_params)
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b save_boot_params_ret /* back to my caller */
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ENDPROC(save_boot_params)
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